US4791004A - Process for forming multilayered coating film - Google Patents
Process for forming multilayered coating film Download PDFInfo
- Publication number
- US4791004A US4791004A US07/052,829 US5282987A US4791004A US 4791004 A US4791004 A US 4791004A US 5282987 A US5282987 A US 5282987A US 4791004 A US4791004 A US 4791004A
- Authority
- US
- United States
- Prior art keywords
- coating film
- film
- coating
- liquid film
- viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
- B05D1/305—Curtain coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S118/00—Coating apparatus
- Y10S118/04—Curtain coater
Definitions
- This invention relates to a process for forming a multilayered coating film for use, for example, in photosensitive recording materials having a photosensitive coating film, in printing plates such as lithographic presensitized plates, and in screen printing plates, magnetic recording materials, and the like.
- Formation of a multilayered coating film by applying a coating composition having uniformly dissolved or dispersed therein a part or all of main components onto a support has been conventionally achieved by a successive coating technique in which each layer is separately coated and dried to build up multiple layers, or by an advanced technique called successive multilayer coating (or a so-called wet on wet coating) or simultaneous multilayer coating which comprises forming a plurality of layers through one coating step, followed by drying all at once.
- successive multilayer coating or a so-called wet on wet coating
- simultaneous multilayer coating which comprises forming a plurality of layers through one coating step, followed by drying all at once.
- Japanese Patent Application (OPI) No. 189969/84 discloses formation of a non-aqueous multilayered coating film.
- a coating composition applied on a dried coating film re-dissolves or swells a part of the dried coating film to cause interlaminar mixing, resulting in failure to fully attaining the desired performance.
- an intermediate layer should be provided, which leads to increased costs for both materials and production. Particularly, this technique increases costs due to repetition of coating and drying steps.
- one object of this invention is to provide an efficient and simple process for forming a multilayered coating film which does not involve substantial interlaminar mixing.
- the coating process according to the present invention comprises making a coating composition flow from a container to form a liquid film, increasing the viscosity of the liquid film, and laminating said liquid film having an increased viscosity onto a support or onto coating film formed on a support.
- the multilayered coating film thus formed is subjected to finishing for fixing.
- the drawing is a flow chart showing an example of the process according to the present invention.
- the numerical symbols 1a and 1b depict curtain coaters; 2a and 2b depict liquid films (curtains); 3a and 3b depict infared ray heating units; 4a and 4b depict pressure rolls; and 5 depicts a polyester cloth.
- the container from which a coating composition is made to flow to form a liquid film includes a hopper having an open top, a closed extruder or slot die, etc.
- the coating composition is discharged from a slot orifice of such containers to form a liquid film like a curtain in a so-called curtain coating technique.
- the viscosity of the coating composition is increased while it is in the form of a liquid film.
- This can be carried out by a method in which a solvent in the liquid film is evaporated by heating with warm air, induction heating, infrared heating, and the like to concentrate the liquid, and decreasing the temperature, to steeply increase the viscosity; a method comprising inducing a polymerization reaction by application of electron rays, ultraviolet rays or heat to cause a steep rise of viscosity through molecular weight increase of a prepolymer; a method comprising cooling the liquid film to cause gelation, and the like.
- the method to be applied can be selected appropriately depending on the kind of the coating composition.
- the viscosity of the coating composition is increased until the composition has a diffusion constant of 10 -9 cm 2 /sec or less, preferably 10 -10 cm 2 /sec, and, at this point, the composition has a viscosity of at least about 10 4 cp, preferably about 10 5 cp.
- the support which can be used in the present invention is a flexible web including paper, plastics, non-woven fabrics, plastic cloths or screens and surface-finished products of these supports.
- multilayered coating film means a coating film composed of at least two layers.
- the liquid film having an increased viscosity is then laminated on a support or a coating film formed on the support by a known laminating process.
- a support or a support having provided thereon a coating film and the liquid film are passed through a pair of Teflon-coated pressure rolls.
- Lamination of multilayer coating films can be effected according to various embodiments. For example, (1) each layer is built up by individual lamination; (2) a liuqid film composed of a plurality of liquid layers is formed beforehand and laminated on a support; (3) a coating composition for an undermost layer is first coated on a support, and a liquid film is then laminated thereon; or (4) a plurality of coating films are formed on a support, and a liquid film is then laminated thereon.
- the multilayered coating film thus formed is subjected to finishing for fixing, i.e., hardening of the coating film to a degree suitable for practical use.
- the finishing treatment for fixing the multilayered coating film varies depending on the coating composition.
- the coating film may be heated with warm air or by induction heating or infrared heating to evaporate the solvent, or may be treated with electron radiation, ultraviolet radiation or heat to cause further polymerization of a prepolymer.
- the fixing may also be effected by merely cooling the coating film. In carrying out the finishing, cares should be taken so that any rise in temperature that occurs does not cause interlaminar mixing due to reduction of the viscosity of the coating film immediately after formation from the liquid film.
- the liquid film since the viscosity of the liquid film in a liquid state is increased, the liquid film can be laminated onto a support or onto a coating film on a support by a known laminating technique. Mixing of two adjacent layers does not occur due to the increased viscosity of the liquid film.
- Light-Sensitive Composition (B) was prepared in the same manner as described above except for changing the amount of the diazo resin to 1.2 parts.
- the drawing is a flow chart illustrating one embodiment of the process according to the present invention.
- Light-Sensitive Composition (A) was made to flow from curtain coater 1a to form curtain liquid film 2a.
- the curtain film in the liquid state was heated by infrared heating unit 3a to evaporate the solvent, i.e., water, to increase the viscosity to about 15,000 cp.
- the curtain film was then laminated on a polyester cloth 5 of 250 mesh (Tylar standard) by passing through Teflon-coated pressure rolls 4a to form a coating film having a thickness of 10 ⁇ m.
- Light-Sensitive Composition (B) was then made to flow from curtain coater 1b to form curtain liquid film 2b.
- the solvent of the curtain film i.e., water, was evaporated by heating with infrared heating unit 3b to increase the viscosity.
- the curtain film was laminated onto the coating film comprising Light-Sensitive Composition (A) on the polyester cloth by passing through Teflon-coated pressure rolls 4b to form a coating film having a thickness of 15 ⁇ m.
- the multilayered coating film built up on the polyester cloth was passed through a dryer at 80° C. for fixing, i.e., final drying.
- the resulting coated screan was adhered to an aluminum-surfaced plate and cut in an appropriate size to obtain a screen printing plate precursor. No substantial interlaminar mixing between (A) and (B) layers was observed.
- the screen printing plate precursor was brought into intimate contact with a positive pattern, exposed to light through the pattern using a 1 kW mercury lamp, developed with water spouted from a shower head, and dried. As a result, a sharp image having a resolving power of about 80 ⁇ m was formed on the screen.
- screen printing was carried out using the resulting screen printing plate, no problem was encountered even after 5,000 prints.
- Example 2 the same apparatus as in Example 1 was used, except for using an electron ray radiator in place of the infrared heating unit.
- Light-Sensitive Composition (C) was prepared from 21 parts of a cresol resin, 4 parts of an electron-curable polyacrylate, 40 parts of cellosolve acetate, and 10 parts of methyl ethyl ketone.
- Light-Sensitive Composition (D) was prepared in the same manner as for Composition (C), except for additionally containing 1 part of a blue dye.
- Light-Sensitive Composition (C) was made to flow to form a curtain liquid film in the same manner as in Example 1, and the curtain film in a liquid state was irradiated with electron rays to gel.
- the liquid film having thus increased viscosity was laminated onto a polyester base of 80 ⁇ m in thickness by passing through pressure rolls.
- a curtain liquid film of Light-Sensitive Composition (D) was formed and irradiated with electron rays to have an increased viscosity.
- the film was then laminated onto the coating film comprising Composition (C) by passing through pressure rolles to form a coating film having a thickness of 22 ⁇ m.
- the multilayered coating film thus formed was dried in a drier at 100° C. to remove the excess of the solvent.
- the cross-section of the multilayered coating film on the polyester base was observed under a microscope of 250 magnifications.
- the coating film made of Composition (C) containing no dye and the coating film made of Composition (D) containing a blue dye were clearly distinguishable with no substantial mixing with each other.
- the present invention makes it possible to easily and efficiently form a multilayered coating film without being accompanied by substantial mixing of adjacent layers.
- the effect of the process of the invention can be further enhanced by subjecting the resulting multilayered coating film to finishing for coating film fixing. Therefore, the present invention makes a great contribution to the production of multilayer coating film.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61-116044 | 1986-05-22 | ||
JP61116044A JPS62273081A (en) | 1986-05-22 | 1986-05-22 | Formation of multilayered coating film |
Publications (1)
Publication Number | Publication Date |
---|---|
US4791004A true US4791004A (en) | 1988-12-13 |
Family
ID=14677321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/052,829 Expired - Lifetime US4791004A (en) | 1986-05-22 | 1987-05-22 | Process for forming multilayered coating film |
Country Status (2)
Country | Link |
---|---|
US (1) | US4791004A (en) |
JP (1) | JPS62273081A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USH1003H (en) | 1989-02-17 | 1991-12-03 | Masao Ishiwata | Process for producing photographic materials |
US5085917A (en) * | 1990-04-10 | 1992-02-04 | Thor Radiation Research, Inc. | Fabric having ravel resistant selvages and method for imparting the same |
WO1993014444A1 (en) * | 1992-01-07 | 1993-07-22 | Rütgerswerke Aktiengesellschaft | Method and device for coating circuit boards |
US5236746A (en) * | 1991-04-15 | 1993-08-17 | Ciba-Geigy Corporation | Curtain coating process for producing thin photoimageable coatings |
US5340613A (en) * | 1993-03-12 | 1994-08-23 | Minnesota Mining And Manufacturing Company | Process for simultaneously coating multiple layers of thermoreversible organogels and coated articles produced thereby |
US5413818A (en) * | 1990-06-28 | 1995-05-09 | Fuji Photo Film Co., Ltd. | Curtain coating method and apparatus utilizing checking plate for controlling liquid flow |
US5415993A (en) * | 1993-04-26 | 1995-05-16 | Minnesota Mining And Manufacturing Company | Thermoreversible organogels for photothermographic elements |
US6093248A (en) * | 1996-02-21 | 2000-07-25 | Voith Sulzer Papiermaschinen Gmbh | Apparatus for applying a liquid or pasty medium onto a traveling material web |
US20030138572A1 (en) * | 2001-11-26 | 2003-07-24 | Hermann Neuhaus-Steinmetz | Coating process |
US20050084618A1 (en) * | 2001-11-26 | 2005-04-21 | Ralf Hirsch | Coating method |
US20050084788A1 (en) * | 2003-10-17 | 2005-04-21 | Hwei-Ling Yau | Method of coating a multilayered element |
US7090898B2 (en) * | 2001-10-22 | 2006-08-15 | Tesa Aktiengesellschaft | Coating process for producing products in web form having at least two layers by application of electrostatic charges followed by neutralization of same |
US20070051466A1 (en) * | 2005-09-07 | 2007-03-08 | Hans-Rudolf Nageli | Process for manufacturing a laminate |
US20070234954A1 (en) * | 2006-03-31 | 2007-10-11 | Ciliske Scott L | System for forming multi-layer films using corona treatments |
US9475081B1 (en) * | 2014-09-23 | 2016-10-25 | Michael A. Ellis | Liquid application system for a flexible web |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1202421A (en) * | 1958-07-16 | 1960-01-11 | Ind Cotonniere Sa D | Permanent starching process and starched product obtained by the process |
US3132966A (en) * | 1960-03-24 | 1964-05-12 | Ti Group Services Ltd | Process of coating a surface with an irradiated polymerizable material |
US3562125A (en) * | 1966-07-08 | 1971-02-09 | Synres Chem Ind Nv | Method for the radiation production of films from unsaturated polyester resins |
US3578527A (en) * | 1967-03-10 | 1971-05-11 | Mitsubishi Petrochemical Co | Method of producing a laminated article employing extrusion and an inert gas |
SU478624A1 (en) * | 1973-03-20 | 1975-07-30 | Украинский Научно-Исследовательский Институт Механической Обработки Древесины | Apparatus for applying highly viscous materials |
JPS5321904A (en) * | 1976-08-12 | 1978-02-28 | Fuji Photo Film Co Ltd | Preparation of magnetic recording material |
US4113903A (en) * | 1977-05-27 | 1978-09-12 | Polaroid Corporation | Method of multilayer coating |
US4128667A (en) * | 1974-01-10 | 1978-12-05 | Polaroid Corporation | Manipulation of coating streams with air foils |
US4548837A (en) * | 1981-11-04 | 1985-10-22 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for coating |
US4571361A (en) * | 1981-04-06 | 1986-02-18 | Fuji Photo Film Co., Ltd. | Antistatic plastic films |
US4676190A (en) * | 1985-03-14 | 1987-06-30 | Walter Spengler | Deflecting device for viscous coating material freely flowing in the form of a sheet |
-
1986
- 1986-05-22 JP JP61116044A patent/JPS62273081A/en active Pending
-
1987
- 1987-05-22 US US07/052,829 patent/US4791004A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1202421A (en) * | 1958-07-16 | 1960-01-11 | Ind Cotonniere Sa D | Permanent starching process and starched product obtained by the process |
US3132966A (en) * | 1960-03-24 | 1964-05-12 | Ti Group Services Ltd | Process of coating a surface with an irradiated polymerizable material |
US3562125A (en) * | 1966-07-08 | 1971-02-09 | Synres Chem Ind Nv | Method for the radiation production of films from unsaturated polyester resins |
US3578527A (en) * | 1967-03-10 | 1971-05-11 | Mitsubishi Petrochemical Co | Method of producing a laminated article employing extrusion and an inert gas |
SU478624A1 (en) * | 1973-03-20 | 1975-07-30 | Украинский Научно-Исследовательский Институт Механической Обработки Древесины | Apparatus for applying highly viscous materials |
US4128667A (en) * | 1974-01-10 | 1978-12-05 | Polaroid Corporation | Manipulation of coating streams with air foils |
JPS5321904A (en) * | 1976-08-12 | 1978-02-28 | Fuji Photo Film Co Ltd | Preparation of magnetic recording material |
US4113903A (en) * | 1977-05-27 | 1978-09-12 | Polaroid Corporation | Method of multilayer coating |
US4571361A (en) * | 1981-04-06 | 1986-02-18 | Fuji Photo Film Co., Ltd. | Antistatic plastic films |
US4548837A (en) * | 1981-11-04 | 1985-10-22 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for coating |
US4676190A (en) * | 1985-03-14 | 1987-06-30 | Walter Spengler | Deflecting device for viscous coating material freely flowing in the form of a sheet |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USH1003H (en) | 1989-02-17 | 1991-12-03 | Masao Ishiwata | Process for producing photographic materials |
US5085917A (en) * | 1990-04-10 | 1992-02-04 | Thor Radiation Research, Inc. | Fabric having ravel resistant selvages and method for imparting the same |
US5413818A (en) * | 1990-06-28 | 1995-05-09 | Fuji Photo Film Co., Ltd. | Curtain coating method and apparatus utilizing checking plate for controlling liquid flow |
US5236746A (en) * | 1991-04-15 | 1993-08-17 | Ciba-Geigy Corporation | Curtain coating process for producing thin photoimageable coatings |
WO1993014444A1 (en) * | 1992-01-07 | 1993-07-22 | Rütgerswerke Aktiengesellschaft | Method and device for coating circuit boards |
US5421884A (en) * | 1992-01-07 | 1995-06-06 | Hans Jurgen Schafer | Apparatus for coating circuit boards |
US5340613A (en) * | 1993-03-12 | 1994-08-23 | Minnesota Mining And Manufacturing Company | Process for simultaneously coating multiple layers of thermoreversible organogels and coated articles produced thereby |
US5378542A (en) * | 1993-03-12 | 1995-01-03 | Minnesota Mining And Manufacturing Company | Process for simultaneously coating multiple layers of thermoreversible organogels and coated articles produced thereby |
US5415993A (en) * | 1993-04-26 | 1995-05-16 | Minnesota Mining And Manufacturing Company | Thermoreversible organogels for photothermographic elements |
US6093248A (en) * | 1996-02-21 | 2000-07-25 | Voith Sulzer Papiermaschinen Gmbh | Apparatus for applying a liquid or pasty medium onto a traveling material web |
US6416580B1 (en) | 1996-02-21 | 2002-07-09 | Voith Sulzer Papiermaschinen Gmbh | Method and apparatus for applying a liquid or pasty medium on a traveling material web |
US7090898B2 (en) * | 2001-10-22 | 2006-08-15 | Tesa Aktiengesellschaft | Coating process for producing products in web form having at least two layers by application of electrostatic charges followed by neutralization of same |
US20030138572A1 (en) * | 2001-11-26 | 2003-07-24 | Hermann Neuhaus-Steinmetz | Coating process |
US7045173B2 (en) * | 2001-11-26 | 2006-05-16 | Tesa Ag | Coating process for producing web form products involving application of electrostatic charges and subsequent charge neutralization |
US20050084618A1 (en) * | 2001-11-26 | 2005-04-21 | Ralf Hirsch | Coating method |
US6896936B2 (en) * | 2001-11-26 | 2005-05-24 | Tesa Ag | Application of coatings to substrates with the aid of electrostatic charges |
US20070141485A1 (en) * | 2003-10-17 | 2007-06-21 | Hwei-Ling Yau | Multilayered imaging element |
WO2005038528A3 (en) * | 2003-10-17 | 2005-09-01 | Eastman Kodak Co | Method of coating a multilayered element |
US20050084788A1 (en) * | 2003-10-17 | 2005-04-21 | Hwei-Ling Yau | Method of coating a multilayered element |
WO2005038528A2 (en) * | 2003-10-17 | 2005-04-28 | Eastman Kodak Company | Method of coating a multilayered element |
US7192680B2 (en) | 2003-10-17 | 2007-03-20 | Eastman Kodak Company | Method of coating a multilayered element |
EP1762377A1 (en) * | 2005-09-07 | 2007-03-14 | Alcan Technology & Management Ltd. | A method for the preparation of a laminate |
US20070051466A1 (en) * | 2005-09-07 | 2007-03-08 | Hans-Rudolf Nageli | Process for manufacturing a laminate |
US7316760B2 (en) | 2005-09-07 | 2008-01-08 | Alcan Technology & Management Ltd. | Process for manufacturing a laminate |
US20070234954A1 (en) * | 2006-03-31 | 2007-10-11 | Ciliske Scott L | System for forming multi-layer films using corona treatments |
US7707963B2 (en) * | 2006-03-31 | 2010-05-04 | 3M Innovative Properties Company | System for forming multi-layer films using corona treatments |
US9475081B1 (en) * | 2014-09-23 | 2016-10-25 | Michael A. Ellis | Liquid application system for a flexible web |
Also Published As
Publication number | Publication date |
---|---|
JPS62273081A (en) | 1987-11-27 |
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Owner name: FUJI PHOTO FILM CO., LTD., NO. 210, NAKANUMA, MINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SUZUKI, FUMIYUKI;TAMURA, YOSHIAKI;SHIBA, KEISUKE;REEL/FRAME:004913/0653 Effective date: 19880511 Owner name: FUJI PHOTO FILM CO., LTD.,JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUZUKI, FUMIYUKI;TAMURA, YOSHIAKI;SHIBA, KEISUKE;REEL/FRAME:004913/0653 Effective date: 19880511 |
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Owner name: FUJIFILM CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJIFILM HOLDINGS CORPORATION (FORMERLY FUJI PHOTO FILM CO., LTD.);REEL/FRAME:020817/0190 Effective date: 20080225 Owner name: FUJIFILM CORPORATION,JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJIFILM HOLDINGS CORPORATION (FORMERLY FUJI PHOTO FILM CO., LTD.);REEL/FRAME:020817/0190 Effective date: 20080225 |